I decided to bootstrap my new machine with btrfs as filesystem instead of ext4 LVM volumes. By following the excellent arch-wiki btrfs page I successfully crafted a base system with sub volumes, limited on size and snapshots enabled.

Everything went fine, installed all the other stuff I needed, pulled in my data and was ready to go.

Obviously on that very moment disaster happened.. Due to an unexpected interrupt the journal went corrupt. When trying to boot I got stuck right after decrypted the disk failing to mount my btrfs root volume.